Paul, Sent this to the list. as it's generally useful. <I think I've got an old rx33-but how would I plug it in? Vs2000? there is a 60-70 pin header that takes a decunique cable the breaks it down the floppy and mfm hard disks. MVII can use a PC floppy cable to the first non twist cable. also It can use PC MFM HD cables to the drive. <And, what about non-DEC mfm drives-- can the hardware read them, but not VM dec name COMMON NAME size RD51 st412 10mb RD52 quantum q540 ~35mb RD53 micropolus 1325 ~71mb RD54 maxtor-2190 ~159mb RD31 ST225 ~20mb RD32 St251 ~40mb This is important to dec software, and booting. Any other drive with the same number heads, cylinders, and tracks can be used as it will map to a known(to the rom) drive. Other drives can be used if the OS knows it and can boot from the known hard drive, floppy or net via mop boot. Allison